diff --git a/build.gradle b/build.gradle
index 8c32debc08..22d4def6eb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,7 +26,7 @@ configure(allprojects) { project ->
 	dependencyManagement {
 		imports {
 			mavenBom "com.fasterxml.jackson:jackson-bom:2.12.0"
-			mavenBom "io.netty:netty-bom:4.1.54.Final"
+			mavenBom "io.netty:netty-bom:4.1.55.Final"
 			mavenBom "io.projectreactor:reactor-bom:2020.0.2"
 			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR8"
 			mavenBom "io.rsocket:rsocket-bom:1.1.0"
@@ -95,7 +95,7 @@ configure(allprojects) { project ->
 			}
 
 			dependency "com.h2database:h2:1.4.200"
-			dependency "com.github.ben-manes.caffeine:caffeine:2.8.6"
+			dependency "com.github.ben-manes.caffeine:caffeine:2.8.8"
 			dependency "com.github.librepdf:openpdf:1.3.23"
 			dependency "com.rometools:rome:1.15.0"
 			dependency "commons-io:commons-io:2.5"
@@ -128,14 +128,14 @@ configure(allprojects) { project ->
 			dependency "org.webjars:webjars-locator-core:0.46"
 			dependency "org.webjars:underscorejs:1.8.3"
 
-			dependencySet(group: 'org.apache.tomcat', version: '9.0.40') {
+			dependencySet(group: 'org.apache.tomcat', version: '9.0.41') {
 				entry 'tomcat-util'
 				entry('tomcat-websocket') {
 					exclude group: "org.apache.tomcat", name: "tomcat-websocket-api"
 					exclude group: "org.apache.tomcat", name: "tomcat-servlet-api"
 				}
 			}
-			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.40') {
+			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.41') {
 				entry 'tomcat-embed-core'
 				entry 'tomcat-embed-websocket'
 			}